A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. A remote attacker who can create valid DNS replies could use this flaw to cause an overflow in a heap-allocated memory. This flaw is caused by the lack of length checks in rfc1035.c:extract_name() which could be abused to make the code execute memcpy() with a negative size in get_rdata() and cause a crash in dnsmasq resulting in a denial of service. The highest threat from this vulnerability is to system availability.

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CVE-2020-29000

An issue was discovered on Geeni GNC-CW013 doorbell 1.8.1 devices. A vulnerability exists in the RTSP service that allows a remote attacker to take full control of the device with a high-privileged account. By sending a crafted message, an attacker is able to remotely deliver a telnet session. An...

dnsmasq: loose address/port check in reply_query() makes forging replies easier for an off-path attacker

A flaw was found in dnsmasq. When getting a reply from a forwarded query, dnsmasq checks in the forward.c:replyquery if the reply destination address/port is used by the pending forwarded queries. However, it does not use the address/port to retrieve the exact forwarded query, substantially...

ALPINE-CVE-2020-25683

A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. A remote attacker, who can create valid DNS replies, could use this flaw to cause an overflow in a heap-allocated memory...

CVE-2020-25685

creationtimestamp| type| source ---|---|--- 2021-01-20 11:02:54+00:00| seen| https://www.kyberturvallisuuskeskus.fi/fi/dnspooq-haavoittuvuusjoukko-laajalti-kaytossa-olevassa-dnsmasq-ohjelmistossa 2021-01-20 18:27:29+00:00| seen| https://t.me/cibsecurity/22350 2021-01-20 18:46:29+00:00| seen|...

Dnsmasq Buffer Error Vulnerability

DNSmasq is a DNS configuration tool by Simon Kelley Personal Developer. Dnsmasq suffers from a buffer error vulnerability that stems from a heap-based buffer overflow in dnsmasq that sorts an rrset before validating it with DNSSEC data in an unsolicited DNS response...

Dnsmasq 缓冲区错误漏洞

Dnsmasq is a lightweight DNS forwarding and DHCP, TFTP server written in C. It can be used as a server to forward DNS, DHCP, and TFTP. Dnsmasq suffers from a buffer overflow vulnerability that stems from a buffer overflow vulnerability in the way dnsmasq extracts names from DNS packets before...

Dnsmasq 安全漏洞

Dnsmasq is a lightweight DNS forwarding and DHCP, TFTP server written in C. It can be used as a server to forward DNS, DHCP, and TFTP. A security vulnerability exists in Dnsmasq prior to version 2.83, which can be exploited by attackers to perform DNS cache poisoning attacks...

dnsmasq: loose address/port check in reply_query() makes forging replies easier for an off-path attacker

A flaw was found in dnsmasq. When getting a reply from a forwarded query, dnsmasq checks in the forward.c:replyquery if the reply destination address/port is used by the pending forwarded queries. However, it does not use the address/port to retrieve the exact forwarded query, substantially...

dnsmasq: heap-based buffer overflow with large memcpy in get_rdata() when DNSSEC is enabled

A flaw was found in dnsmasq. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. A remote attacker, who can create valid DNS replies, could use this flaw to cause an overflow in a heap-allocated memory. This flaw is cause...

dnsmasq: heap-based buffer overflow with large memcpy in sort_rrset() when DNSSEC is enabled

A flaw was found in dnsmasq. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. This flaw allows a remote attacker, who can create valid DNS replies, to cause an overflow in a heap-allocated memory. This flaw is caused b...

dnsmasq: heap-based buffer overflow in sort_rrset() when DNSSEC is enabled

A flaw was found in dnsmasq. A heap-based buffer overflow was discovered in the way RRSets are sorted before validating with DNSSEC data. An attacker on the network, who can forge DNS replies such as that they are accepted as valid, could use this flaw to cause a buffer overflow with arbitrary da...

UBUNTU-CVE-2020-25687

A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. This flaw allows a remote attacker, who can create valid DNS replies, to cause an overflow in a heap-allocated memory...

UBUNTU-CVE-2020-25682

A flaw was found in dnsmasq before 2.83. A buffer overflow vulnerability was discovered in the way dnsmasq extract names from DNS packets before validating them with DNSSEC data. An attacker on the network, who can create valid DNS replies, could use this flaw to cause an overflow with arbitrary...

CVE-2021-1637

Windows DNS Query Information Disclosure Vulnerability...

PT-2021-1828 · Microsoft · Windows Dns +1

Name of the Vulnerable Software and Affected Versions: Windows DNS versions affected versions not specified Description: The issue is related to weaknesses in the security mechanisms of the Windows DNS server, allowing an attacker to gain unauthorized access to protected information. It enables...

Rust 资源管理错误漏洞

Rust is a general-purpose, compiled programming language from the Mozilla Foundation. A resource management error vulnerability exists in trust-dns-server crate in Mozilla Rust versions prior to 0.18.1, which stems from a DNS MX and SRV null target handling error that results in stack consumption...

F5 BIG-IP Denial of Service Vulnerability (CNVD-2020-74858)

F5 BIG-IP is an application delivery platform from F5 USA that integrates network traffic management, application security management, load balancing and other functions. A denial of service vulnerability exists in the F5 BIG-IP product, which can be exploited by an attacker to trigger a denial o...

F5 BIG-IP DNS/GTM Security Vulnerabilities

F5 BIG-IP is an application delivery platform that integrates network traffic management, application security management, load balancing, and other features from F5 Corporation. A security vulnerability exists in F5 BIG-IP DNS/GTM, which can be exploited by an attacker to trigger a denial of...

F5 BIG-IP 安全漏洞

F5 BIG-IP is an application delivery platform from F5 USA that integrates network traffic management, application security management, load balancing and other functions. A denial of service vulnerability exists in the F5 BIG-IP product, which can be exploited by an attacker to trigger a denial o...